Plastic compound.



STATES Patented January 1'7, 1905.

PATENT OFICE.

PLASTIG GOMFUUND.

SPECIFICATION forming part of Letters Patent No, 780,240, dated January1'7, 1905. Application filed October 15, 1904. erial No. 228,631.

To all whom it 777/061] concern:

Be it known that I, THOMAS JEFFERSON SPITZER, a citizen of the UnitedStates, residing at Morristown, in the county of Hamblen and State ofTennessee, have invented a new and useful Plastic Compound, of which thefollowing is a specification.

This invention relates to plastic compounds used for molding pottery,artificial-stone coffins, tombstones, bath-tubs, and similar articles,and has for its object to provide a compound of this character whichwhen molded into the desired shape and thoroughly set or solidified willeffectually resist the deleterious action of the elements for anindefinite period.

With this object in view the invention consists in a compound formed ofthe following ingredients, to wit: plaster of-paris, fifty pounds;pulverized sulfur, four pounds; pulverized alum, two pounds; driedsawdust, two pounds, and pulverized borax, four ounces.

In carrying out the invention the above ingredients while in a dry stateare thoroughly mixed together in a vessel or other suitable receptacle,so that the several parts will be well blended, after which a suflicientquantity of hot water is added thereto to give the same the consistencyof thin paste. The compound is then introduced into the mold and allowedto set until the molded product is sufficiently hard for use, the timerequired being found in actual practice to be from four to five hours.

If desired, any suitable pigment or coloring material may be added tothe compound in-order to give the same different shades or tints.

Articles molded from a compound thus prepared present a hardmoisture-proof surface, will not crumble or disintegrate, and will notfreeze when subjected to an intense degree of cold.

Having thus described the invention, what is claimed is A plasticcompound consisting of plaster of-paris fifty pounds, pulverized sulfurfour pounds, pulverized alum two pounds dried sawdust two pounds,pulverized borax four ounces, the whole being combined with hot Water inthe manner substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

THOMAS JEFFERSON SPITZER.

Witnesses:

J. E. JonNsoN, HENRY SANDERS.

